Boiler-cleaning apparatus



(No Model.)

W. 0RD.

BOILER GLEANING APPARATUS.

No. 311,672.' Patented; Feb. 3, 1885. SHE-7'7... .1...

A i I l A WWW/1756271101111 W/T/VESSES l/VVE/VTOR Horneys N. PZTEHS Plmto-Lithogmuhnn WashinglOlL D. c.

rates Fl lCiEl Patient VILLIAM 0RD, OF

BROOKLYN, OHIO.

BQiLER-CLEANING APPARATUS.

SPECIFICATION fanning part of Letters Patent IEO. 311,672, dated February 8, 1885.

Application filed July 2., 1884.

To all whom it may concern.-

Be it known that I, WILLIAM 0RD, of Brooklyn, in the county of Ouyahoga andState of Ohio, have invented certain new. and useful Improvements in BoilerGleaning Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to apparatus for cleaning steam-boilers, the object being to provide a scraping device for removing sediment and scales from the inside or the bottom of the boiler when a pressure of steam is on the boiler. A further object is to provide a removable rod for operating the scraper, and arranged to operate through a stuffing-box, so that no leak A further age is had in operating the device. object is to provide a hollow bolt for the handhole plate, through which the scraper-rod may pass into the boiler. A further object is to provide a tiltingscraperthat will tilt or turn, so as to slide on the surface when drawn in one direction, but will assume an upright po' sition and scrape the surface when drawn in the opposite direction. A further object is to provide a reversible scraper that may be made to remove the sediment in either direction, to the end that the sediment is moved toward the blow-off pipe. A further objectis to provide a seat on the inside of the manhole plate and around the opening through which the scraper-rod passes, and a corresponding plug on either side of the scraper, into which the scraper-rod is screwed, and so arranged that when the plug is drawn within the said seat it prevents leakage from the boiler when the scraper rod is removed.

With these objects in view my invention consists in certain features of construction and in combination of parts, hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a longitudinal vertical section ofa boiler and my improved cleaning apparatus in position. Fig. 2 is an enlarged view in perspective of the scraper in an upright position. Fig. 3 is an enlarged view in perspective of the scraper in a tilted position. Fig. 4c is an enlarged longitudinal section of the scraper and the boiler l .\'o model.)

attachments through which the scraper operates. Fig. 5 is a longitudinal section of the hollow bolt through which the scraper-rod passes.

A represents a steam-boiler provided with the hand'hole plate B, secured in the usual manner by the bolt 1) and the bridge I). O is the head or body of the scraper, curved longitudinally to correspond with the boiler, and hasa series of ears, 0, depending from the low- G, that form the scraper proper. are preferably of spring-brass and quite thin and flexible,and curve more less in crosssection, so that when moved in one direction they draw under the scales and sedimenaand when moved in the opposite direction will have a tendency to ride over the sediment. These sheets are slitted part way into narrow strips, as sh ow n,so that when one part engages arivethead it will spring back and pass over the obstruction,and then return to its place without interfering with the action of the other parts ofthe scraper. The part 0 has a depression in the central part extending laterally, and deeper at one edge than at the other. In this depression is pivoted the part D, that is a pluground in cross-section and tapering towarcLe-ach end. The pocket or depression in the part 0 is only deep enough on one side at d to admit of the part D when the latter is about parallel with a cross-section of the part 0, as shown in Figs. 1, 3, and 4. The depression at d on the other edge ofthe part Ois deep enough to allow thepart O to be tilted in the position shown in Fig. 2, and this tilting of the scraper, together with the curvature of the plates 0, causes the scraper, when moved to the left hand, to ride over the sediment without removing it. Each end of the plug D has a central hole, at, threaded to receive the rod E, by which the scraper is moved. The outside of the plug on each end is fitted to a tapering seat, I), on the inner end of the hollow bolt 12. The hole in the bolt is large enough to admit the passage of the rod E freely, and a pipe, E, is coupled onto the outer end of the bolt and extends through the smokeboxF, and is provided at the outer end with the part c and the gland e, forming a stuffing-box around the rod E. The relation of parts is such that when the rod E is er side, to which are riveted the metal strips Thesesheets screwed into one end of the plug D the scraper, when in an upright position, as in Figs. 1 and 3, will rest 011 theboiler. The rod E is long enough to move the scraperto the back end of the boiler. The scraper arranged as shown in the drawings would move the sediment to the forward end of the boiler, as wouldbe the case if the blow-off were located at the front end. If, however, the blow-off pipe were at-the back end of the boiler, the scraper should be reversed and the rod E screwed into the opposite end of. the plug D. In this case the scraper would move the sediment rearward,and would slide over the sediment when the scraper was drawn forward.

When it is desired to clean the boiler, the blow-oft valve is opened and the scraper drawn forward and back as rapidly as possible for a few moments. The scraper loosens the sediment and moves it toward the blowoff, and the current through the latter quickly removes the sediment from the boiler. Also, in working the scraper rapidly, waves are formed in the boiler that wash the dirt from the lower fiues, and aid more or less in cleansing the lines farther up into the boiler. When the scraping is done,the blow-off valve is closed and the scraper is drawn forward. As it approaches the front end, it should be moved rapidly, so that the forward end of the plug D will be drawn into the seat .1) with some force. The pressure of steam in the rear will of course keep the plug in thisposition, and the rod E may be unscrewed and removed. The rod E, passing through the hollow bolt b, guidesthe plug D to the seat I)", and when the rod isagain introduced in the bolt b it in turn is guided to its engagement with the plug D. The scraper may extend more or less around the inner circumference of the boiler, according to the location of the tubes. The scrapershould be of such dimensions that it can be inserted in the hand-hole by turningthescrapersidewise; butusually there is ample room for inserting the scraper. When the rod E is removed, this device is entirely out of the way. In case the hand-hole plate is to be removed, it requires but a moment to unscrew the pipe E, and then the hand-hole plate may be removed in the usual manner.

In many localities where it is necessary to use muddy water in boilers this device will be found very useful, as it can be operated at any time with a full head of steam on the boiler. The introduction of the rod E into the boiler is not necessarily confined to the hand-hole plate. If no hand-hole plate is located convenient for the purpose, a hollow plug may be inserted in the head of the boiler that will answer the same purpose of the bolt 12, having, of course, a seat, 12 In such case the scraper could be inserted through the manhole or through a hand-hole located at some other part, and when all the parts are in position they can be operated just as described without further trouble.

What I claim is 1. Ina boiler-cleaner, atilting scraper, pivoted as shown, and located inside of a steamboiler, and operated by an'intlexible rod extending outside of the boiler, substantially as set forth.

2. A reversible tilting scraper located inside of the steam-boiler and operated by an inflexible rod extending outside of the boiler, and so arranged that sediment maybe scraped toward either end of the boiler, according to the position of the scraper, substantially as set forth.

3. The combination, with a scraper located inside a steam boiler and operated by a rod extending outside of the boiler, of a hollow bolt for securing the hand-hole plate, and so arranged that the hole in the bolt furnishes a passage-way for the scraper-rod, substantially as set forth.

4. In aboiler-cleaner, the combination, with the hollow bolt 1), provided with an enlarged 'taperingopening or seat, I), of the part'D,

adapted to engage the seat b substantially as set forth.

- 5. In a boiler-cleaner, the combination, with the hollow bolt 1), of the tube E and the parts 6 and e, substantially as set forth.- 7

In testimony whereof I sign this specification, in the presence of two witnesses, this 9th day of July, 1884.

' WILLIAM 0RD. Witnesses:

CHAS. H. DORER, ALBERT E. LYNCH. 

